Abstract
New technologies must ensure that the natural resources used can somehow return to the environment in an advantageous way. The objective of this study was to evaluate organic compost produced from cattle manure and cellulose paper residues and lettuce production. In the organic compost the Pb and Cd concentrations were below the limits of quantification by the methodology used. The organic compost was evaluated in two consecutive lettuce crops. The first cultivation was carried out in a completely randomized design in the 4x3+1 scheme with four replicates: four doses of organic compost, three different organic compost and additional treatment, without addition of organic compost. The second cultivation was carried out 90 days after the first one, without additional of fertilizers. In the soil, there was an increase in pH, CEC, SOC, P, K, Ca and Mg, after 2 consecutive crops. Significative concentrations of Ni, Cr, Pb and Cd not were found in the plants in both crops. The use of organic compost from cellulose paper residues in agricultural improved soil fertility and lettuce production, being the highest yields obtained in the second crop.
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Claims 6
Claim · model-written summary
Compost had lead and cadmium below quantification limits.
- Taxon
- lettuce
Lactuca sativat0 - Outcome
- Pb and Cd concentrationse0
- Direction
- belowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the organic compost the Pb and Cd concentrations were below the limits of quantification by the methodology used.”
t0“lettuce”
Claim · model-written summary
Soil pH, CEC, SOC, P, K, Ca and Mg increased after two lettuce crops.
- Taxon
- lettuceLactuca sativat0
- Outcome
- pH, CEC, SOC, P, K, Ca and Mge0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the soil, there was an increase in pH, CEC, SOC, P, K, Ca and Mg, after 2 consecutive crops.”
t0“lettuce”
Claim · model-written summary
Significant concentrations of Ni, Cr, Pb and Cd were not found in lettuce plants.
- Taxon
- lettuceLactuca sativat0
- Outcome
- concentrations of Ni, Cr, Pb and Cde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significative concentrations of Ni, Cr, Pb and Cd not were found in the plants in both crops.”
t0“lettuce”
Claim · model-written summary
Paper residue compost improved soil fertility.
- Taxon
- lettuceLactuca sativae0
- Treatment
- organic compost from cellulose paper residuese0
- Outcome
- soil fertilitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of organic compost from cellulose paper residues in agricultural improved soil fertility and lettuce production, being the highest yields obtained in the second crop.”
Claim · model-written summary
Paper residue compost improved lettuce production.
- Taxon
- lettuceLactuca sativae0
- Treatment
- organic compost from cellulose paper residuese0
- Outcome
- lettuce productione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of organic compost from cellulose paper residues in agricultural improved soil fertility and lettuce production, being the highest yields obtained in the second crop.”
Claim · model-written summary
Highest lettuce yields occurred in the second crop.
- Taxon
- lettuceLactuca sativat0
- Outcome
- yieldse0
- Direction
- higheste0
- Qualifier
- second crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“being the highest yields obtained in the second crop.”
t0“lettuce”
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